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Finding the Fourth Proportional to 223,663.98, 308,674.08 and 128,179.56

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Solution

The fourth proportional to 223,663.98, 308,674.08 and 128,179.56 is: 176,897.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,663.98 : 308,674.08 = 128,179.56 : x
  2. Step 2: Convert to fraction form
    223,663.98/308,674.08 = 128,179.56/x
  3. Step 3: Cross multiply
    223,663.98x = 308,674.08 × 128,179.56
  4. Step 4: Simplify right side
    223,663.98x = 39,565,707,757.80
  5. Step 5: Solve for x
    x = 39,565,707,757.80/223,663.98
  6. Step 6: Final answer
    x = 176,897.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.